<template>
  <s-layout
    title="购物车"
    tabbar="/pages/index/cart"
    backgroundColor="#4E8EF7"
    navbar="normal"
    :showLeftButton="false"
    :bgStyle="{ color: '#fff' }"
  >
    <s-empty
      v-if="state.list.length === 0"
      text="购物车空空如也,快去逛逛吧~"
      icon="/static/cart-empty.png"
    />

    <!-- 头部 -->
    <view class="cart-box ss-flex ss-flex-col ss-row-between" v-if="state.list.length">
      <view class="cart-header ss-flex ss-col-center ss-row-between ss-p-x-30">
        <view class="header-left ss-flex ss-col-center ss-font-26">
          共
          <text class="goods-number ui-TC-Main ss-flex">{{ state.list.length }}</text>
          件商品
        </view>
        <view class="header-right">
          <button v-if="state.editMode" class="ss-reset-button" @tap="state.editMode = false">
            取消
          </button>
          <button v-else class="ss-reset-button ui-TC-Main" @tap="state.editMode = true">
            编辑
          </button>
        </view>
      </view>
      <!-- 内容 -->
      <view class="cart-content ss-flex-1 ss-p-x-30 ss-m-b-40">
        <view class="goods-box ss-r-10 ss-m-b-14" v-for="item in state.list" :key="item.id">
          <view class="ss-flex ss-col-center">
            <label class="check-box ss-flex ss-col-center ss-p-l-10" @tap="onSelectSingle(item.id)">
              <radio
                :checked="state.selectedIds.includes(item.id)"
                style="transform: scale(0.8)"
                @tap.stop="onSelectSingle(item.id)"
              />
            </label>

            <s-goods-item
              :title="item.spu.name"
              :img="item.spu.picUrl || item.goods.image"
              :price="item.sku.price"
              :skuText="
                item.sku.properties.length > 1
                  ? item.sku.properties.reduce(
                      (items2, items) => items2.valueName + ' ' + items.valueName,
                    )
                  : item.sku.properties[0].valueName
              "
              priceColor="#FF3000"
              :titleWidth="400"
            >
              <template v-if="!state.editMode" v-slot:tool>
                <su-number-box
                  :min="0"
                  :max="item.sku.stock"
                  :step="1"
                  v-model="item.count"
                  @change="onNumberChange($event, item)"
                />
              </template>
            </s-goods-item>
          </view>
        </view>
      </view>
      <!-- 底部 -->
      <su-fixed
        bottom
        :val="isApp ? 24 : 96"
        placeholder
        v-if="state.list.length > 0"
        :isInset="false"
      >
        <view class="cart-footer ss-flex ss-col-center ss-row-between ss-p-x-30 border-bottom">
          <view class="footer-left ss-flex ss-col-center">
            <label class="check-box ss-flex ss-col-center ss-p-r-30" @tap="onSelectAll">
              <radio
                :checked="state.isAllSelected"
                style="transform: scale(0.8)"
                @tap.stop="onSelectAll"
              />
              <view class="ss-m-l-8"> 全选 </view>
            </label>
            <text>合计：</text>
            <view class="text-price price-text">
              {{ fen2yuan(state.totalPriceSelected) }}
            </view>
          </view>
          <view class="footer-right">
            <button
              v-if="state.editMode"
              type="warn"
              class="ss-reset-button del-btn ui-Shadow-Main"
              @tap="onDelete"
            >
              删除
            </button>
            <button v-else class="ss-reset-button pay-btn ui-Shadow-Main" @tap="onConfirm">
              去结算
              {{ state.selectedIds?.length ? `(${state.selectedIds.length})` : '' }}
            </button>
          </view>
        </view>
      </su-fixed>
    </view>
  </s-layout>
</template>
  
  <script setup>
import sheep from '@/sheep';
import { computed, reactive, onMounted, ref } from 'vue';
import { fen2yuan } from '../../sheep/hooks/useGoods';
const isApp = ref(false);
onMounted(() => {
  // 使用环境变量判断平台
  if (process.env.VUE_APP_PLATFORM === 'app') {
    isApp.value = true;
  } else {
    isApp.value = false;
  }
});

const sys_navBar = sheep.$platform.navbar;
const cart = sheep.$store('cart');

const state = reactive({
  editMode: false,
  list: computed(() => cart.list),
  selectedList: [],
  selectedIds: computed(() => cart.selectedIds),
  isAllSelected: computed(() => cart.isAllSelected),
  totalPriceSelected: computed(() => cart.totalPriceSelected),
});

// 单选选中
function onSelectSingle(id) {
  cart.selectSingle(id);
}

// 全选
function onSelectAll() {
  cart.selectAll(!state.isAllSelected);
}

// 结算
function onConfirm() {
  let items = [];
  let goods_list = [];
  state.selectedList = state.list.filter((item) => state.selectedIds.includes(item.id));
  state.selectedList.map((item) => {
    // 此处前端做出修改
    items.push({
      skuId: item.sku.id,
      count: item.count,
      cartId: item.id,
    });
    goods_list.push({
      // goods_id: item.goods_id,
      goods_id: item.spu.id,
      // goods_num: item.goods_num,
      goods_num: item.count,
      // 商品价格id真没有
      // goods_sku_price_id: item.goods_sku_price_id,
    });
  });
  // return;
  if (goods_list.length === 0) {
    sheep.$helper.toast('请选择商品');
    return;
  }
  sheep.$router.go('/pages/order/confirm', {
    data: JSON.stringify({
      // order_type: 'goods',
      // goods_list,
      items,
      // from: 'cart',
      deliveryType: 1,
      pointStatus: false,
    }),
  });
}

function onNumberChange(e, cartItem) {
  if (e === 0) {
    cart.delete(cartItem.id);
    return;
  }
  if (cartItem.goods_num === e) return;
  cartItem.goods_num = e;
  cart.update({
    goods_id: cartItem.id,
    goods_num: e,
    goods_sku_price_id: cartItem.goods_sku_price_id,
  });
}
async function onDelete() {
  cart.delete(state.selectedIds);
}
</script>
  
  <style lang="scss" scoped>
// :deep(.ui-fixed) {
//   height: 72rpx;
// }

// .cart-box {
//   width: 100%;

//   .cart-header {
//     height: 70rpx;
//     background-color: #f6f6f6;
//     width: 100%;
//     position: fixed;
//     left: 0;
//     top: v-bind('sys_navBar') rpx;
//     z-index: 1000;
//     box-sizing: border-box;
//   }

//   .cart-footer {
//     height: 100rpx;
//     background-color: #fff;

//     .del-btn {
//       width: 180rpx;
//       height: 70rpx;
//       font-size: 28rpx;
//       line-height: 28rpx;
//       font-weight: 500;
//       border-radius: 40rpx;
//     }

//     .pay-btn {
//       width: 180rpx;
//       height: 70rpx;
//       font-size: 28rpx;
//       line-height: 28rpx;
//       font-weight: 500;
//       border-radius: 40rpx;
//       background: #4781f1;
//       color: #fff;
//     }
//   }

//   .cart-content {
//     margin-top: 70rpx;

//     .goods-box {
//       background-color: #fff;
//     }
//   }
// }
</style>